TY - GEN
T1 - Effect of composition on microstructure and dynamic mechanical properties of W-Ni-Cu alloys
AU - Zou, Hong
AU - Wang, Ying Chun
AU - Li, Shu Kui
PY - 2014
Y1 - 2014
N2 - The effects of tungsten contents (80-88wt.%) and different Ni:Cu ratio (7:3-3:7 by weight) on microstructure and dynamic mechanical properties of W-Ni-Cu alloys were investigated. Results show that at the same sintering conditions, with tungsten content increasing from 80 wt % to 88 wt %, tungsten grains increase slightly. Spherical and more uniform tungsten grains distribute in matrix phase in 85W alloys with Ni:Cu ratio of 1:1 than that of 3:7 and 7:3. The results also show that the dynamic yield strength of W-Ni-Cu alloys goes up with tungsten content increasing, but keep similar deformation capability. With strain rate increasing in the range of 2600-4200s-1, 85W displays strain rate softening effect. Adiabatic shear bands are formed at strain rate over 3200s-1.
AB - The effects of tungsten contents (80-88wt.%) and different Ni:Cu ratio (7:3-3:7 by weight) on microstructure and dynamic mechanical properties of W-Ni-Cu alloys were investigated. Results show that at the same sintering conditions, with tungsten content increasing from 80 wt % to 88 wt %, tungsten grains increase slightly. Spherical and more uniform tungsten grains distribute in matrix phase in 85W alloys with Ni:Cu ratio of 1:1 than that of 3:7 and 7:3. The results also show that the dynamic yield strength of W-Ni-Cu alloys goes up with tungsten content increasing, but keep similar deformation capability. With strain rate increasing in the range of 2600-4200s-1, 85W displays strain rate softening effect. Adiabatic shear bands are formed at strain rate over 3200s-1.
KW - Dynamic mechanical properties
KW - Liquid-phase sintering
KW - Tungsten heavy alloys
UR - http://www.scopus.com/inward/record.url?scp=84897677457&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.513-517.121
DO - 10.4028/www.scientific.net/AMM.513-517.121
M3 - Conference contribution
AN - SCOPUS:84897677457
SN - 9783038350125
T3 - Applied Mechanics and Materials
SP - 121
EP - 124
BT - Applied Science, Materials Science and Information Technologies in Industry
T2 - 2014 International Conference on Advances in Materials Science and Information Technologies in Industry, AMSITI 2014
Y2 - 11 January 2014 through 12 January 2014
ER -